Add support for shared library resources to java_apk build rules for real.

build/java_apk.gypi

Index: build/java_apk.gypi
diff --git a/build/java_apk.gypi b/build/java_apk.gypi
index 518421886dcead14c8b90eee60440fc2d2b0b523..424355433d5bb42c7535bd07d4a7fc3749f82df9 100644
--- a/build/java_apk.gypi
+++ b/build/java_apk.gypi
@@ -831,10 +831,16 @@
       'action_name': 'package_resources',
       'message': 'packaging resources for <(_target_name)',
       'variables': {
+        'package_resources_options': [],
         'package_resource_zip_input_paths': [
           '<(resource_zip_path)',
           '>@(dependencies_res_zip_paths)',
         ],
+        'conditions': [
+          ['shared_resources == 1', {
+            'package_resources_options+': ['--shared-resources']
+          }],
+        ],
       },
       'conditions': [
         ['is_test_apk == 1', {
@@ -874,6 +880,8 @@
         '--no-compress', '<(extensions_to_not_compress)',
 
         '--apk-path', '<(resource_packaged_apk_path)',
+
+        '<@(package_resources_options)',
       ],
     },
     {